1slowbusa

iTrader: (8)

What do you guys recommend on aftermarket rockers? Would you get non adjustable or adjustable?




Vehicle:
2000 Camaro SS 6speed (33000 miles on the car)

Modifications:
AFR 205 heads 62cc chambers .040 cometic head gaskets, ARP head studs
921 valve springs, 7.4 push rods
LS6 ported oil pump
FIC 42lb injectors
Stock lifters
G5X3 112LSA
Double roller timing chain
Ls6 intake, egr and air delete
Monster stage 5 clutch and flywheel
1/7/8 TSP headers with catted ypipe

vettenuts

iTrader: (4)

I have the AFR's and use the Yella Terra rockers. Tony helped develop the latest lightweight version. I have write-ups for setting them up on AFR heads.

1slowbusa

iTrader: (8)

Is there anyway you can send me the writups on setting them up?

Did you go with adjustable or non adjustable?

Sprayed1998

iTrader: (10)

Yella Terras, my Harlands fell apart and spit needle bearings all over my 402

SteelCityMaro

Do your motor a huge favor and leave both on the shelf, get scorpion rockers never had a single problem with mine and good price too.

My6speedZ

iTrader: (18)

YT's its what I run and most AFR & TFS packages come with. I know there are threads out there were people have had issues with the harland pieces, I believe if you look you can find negative threads on both. Just consult some shops and hear what they have to say.

t/a98

iTrader: (6)

I've read sooo many horror stories with scorpions. Lots of issues in the past... Maybe they are better now...

I have the g6x3 cam and am running yella terras. No problems here with big heavy l92 valves and Texas speed double valve springs. Your valves are even lighter so you should be good to go.

Also your heads have less forgiving guides than I do so any bit of valve sweep will eat em up. Also my valve train is nice and quiet with these. Can barely hear it running over the air woosh sound my intake makes at idle.

Ps. Just remembered, I believe yella terra claims a little more power over stock because they don't flex like stamped steel does when used on a big cam car. Not to mention the decreased friction from the bearing on the tip.

SteelCityMaro

Scorpions totally redesigned their product about five years ago before I got them I read all the horror stories Bout them. I called a scorpion tech and he said their goal is to have the best LS rockers out there and they put tons of r&d into them. I have been running scorpions for years on my dirt cars. But if I had to pick Another rocker I would get some yella's. Good luck man

Canada

iTrader: (2)

Get a set of jessel and not have to worry.

raven154

iTrader: (14)

Jessel rockers are probably the best. I have had no issues from my Crane gold rollers. Made the valve train much quieter too.

1slowbusa

iTrader: (8)

Thanks everyone for your reply

onefastgator

I have the Yella Terra rockers and they have been great. They are a bolt on shaft type rocker and not a stud mount which means increased strength and durability. First thing I noticed was the increased throttle response. I also read somewhere that anodizing weakens the aluminum and the bulk of the rockers out there are anodized. I will try to find that information and post it. I am more interested in strength, performance & durability then removing my valve cover to fix a pretty colored broken rocker.

RARON455

iTrader: (35)

yella terras here, no complaints, came with shims but did not need them. Heard wierd fitment issues on the harlands from some members.

LSOHOLIC

iTrader: (3)

Whats wrong with the stockers with a trunnion upgrade ??


Thanks....

vettenuts

iTrader: (4)

I went with the non-adjustable.

Here is the setup (don't follow ls1howto for setup): Link

Once they are setup correctly, measure for pushrod length using an adjustable pushrod.

ausls1

Most people here run factory rockers or yella terra as far as i know, very popular here and haven't heard anything bad about them. I'll be using yella terra's non adjustables in mine, luckily there R&D workshop and sales is just up the road from my work

t/a98

iTrader: (6)

The problem with stock upgraded rockers has been documented many times. They aren't designed to go as high of a lift as we use so they end up pushing and pulling the valve. This causes premature wear especially when paired with the valve guides that high end heads use. I think they call it sweep? If you do a search it will pop up alot. Maybe someone will find it and post it.

With a roller rocker like tells terra, they can go as much lift as you want and still keep good geometry unlike factory rockers.

LSOHOLIC

iTrader: (3)

I guess I'll do some more searching because I have read the opposite. Factorys have some of the best geometry and ridigity as compared to others (except T&D and Jesel). The only real complaint with the factorys is the needle bearings...thats where the trunnion upgrade comes in ($100). Just for referance I ran factorys on a couple different cams with appsalutly zero problems. And one of the cams was 235 w/.645 lift.

And I dont understand why you would need a adjustable rocker on a hydro setup either ???

Thanks.....

Havoc40

Only real reason to run an adjustable with hyd. lifters is if your running a short travel lifter. When I say short travel, I mean .016" available travel .009" after preload. There's no way you can set that up without adjustable rockers. With standard travel lifters, non-adjustable are just fine.

RARON455

iTrader: (35)

And the oem rockers are not a full roller rocker.